EP0643463B1 - Insulator support for conductor rails - Google Patents
Insulator support for conductor rails Download PDFInfo
- Publication number
- EP0643463B1 EP0643463B1 EP94111482A EP94111482A EP0643463B1 EP 0643463 B1 EP0643463 B1 EP 0643463B1 EP 94111482 A EP94111482 A EP 94111482A EP 94111482 A EP94111482 A EP 94111482A EP 0643463 B1 EP0643463 B1 EP 0643463B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- live
- rail
- protective casings
- busbar protection
- busbar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/30—Power rails
- B60M1/305—Joints
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/002—Joints between bus-bars for compensating thermal expansion
Definitions
- the innovation concerns an insulation support.
- a cover for power lines is known, which is fixed on the power lines via spacers.
- spacers are injection molded and blow molded parts that are pre-tensioned in their seat on the power line so that they can be clamped on the power line.
- the known spacers have latching lugs or support feet, which are either supported on the associated wall areas of the cover during the establishment of the connection between the spacer and the cover or are groped behind them.
- the known spacers with their extensive cross-sectional shape and their tolerated dimensions can be produced primarily by injection molding, since the required dimensional accuracy can only be achieved with these methods. To a limited extent, however, the blowing process can also be used here.
- busbar cover is known that can be used, for example, in the construction of subways.
- This busbar cover consists of a busbar protection box and a spacer.
- the one in this The spacer shown in the publication is a hollow blow-molded part which has two end regions which are bent away from one another at an elongated central region.
- These cranked end areas are snapped or buttoned behind this head area when used on the busbar head area, so that the spacer can be snapped firmly onto the busbar head area.
- the known spacers are placed on the conductor rail head areas at a distance of approximately 0.4 to 1 m. They rest with their outer walls on the inner walls of the busbar protection box and form chamber-like subdivisions from spacer to spacer after it has been put on. This results in air cushions separated from one another in the longitudinal direction of the busbar, which prevents or very severely restricts air exchange in the longitudinal direction.
- heat build-up occurs because the excess heat cannot be dissipated by the standing air cushions.
- there may be locally very different linear expansions of the busbar protection boxes which can lead to negative influences on the covering system as a whole, in particular in the transition from shady and sunny areas.
- Such different lengths of the busbar protection boxes can result in jamming or displacement on the spacers, as a result of which the spacers can even be released from their press fit on the busbar head area.
- spacers with controlled, annularly closed or open-sided profile sections. With their inner wall areas spanning the busbars and their outer wall area facing the busbar protection box, these spacers form at least one through opening for the unimpeded air passage between the busbar protection box and the wall areas covering the busbar. This creates the possibility of air exchange, but it does not prevent an uncontrolled linear expansion of the busbar protection boxes in both directions.
- the stop limitation according to the invention can be arranged on one or more of the outer sides of the support arm directed towards the free ends of the adjacent busbar protection boxes. It can be a stop cam or a stop bead formed from the assigned surface of the support arm or a stop cam molded or molded onto it. It is essential here that in the case of a heat-related expansion of the busbar protection box after the abutment of an end face of the busbar protection box at the associated stop limitation, the direction of the further expansion of the busbar protection box is reversed, namely towards the stop limitation at the opposite free end of the busbar protection box.
- the predetermined distances between the free ends of a busbar protection box and at the two associated limit stops are selected so that the sleeve-like cover element covers the areas between the free ends of adjacent busbar protection boxes and the associated limit stop in all positions.
- busbar protection boxes 4, 5 following the busbar protection box 3 are also indicated in the axial direction.
- the same displacement distance A is also given in the following busbar protection boxes 4, 5, so that each individual busbar protection box 3, 4, 5 has twice the distance A available for temperature-related changes in length.
- the area of the insulation supports 1, 2 with the stop limits 12, 22 and the free displacement distances A is covered in each case by the sleeve-like cover element 6, 7.
- This sleeve-like cover element 6, 7 can, for example, be formed in one piece on a free end of the associated busbar protection box 3.
- the sleeve-like cover element 6, 7 can also be fixed by gluing or by mechanical connection to the free end of the busbar protection box 3, 4, 5.
- the length dimensions of the individual busbar protection boxes 3, 4, 5 is set according to the innovation so that no change in length is possible if the free ends of adjacent busbar protection boxes are in contact with the respective limit stops.
- the displacement distance A must therefore have a magnitude in which the greatest possible extent is taken into account in order to avoid warping of the axially adjacent busbar protection boxes 3, 4 and 3, 5 with one another.
- the insulation supports 1, 2, in which the spacing principle according to the innovation can be used can be designed in one piece or in multiple pieces. It can be used with both fixed insulators and height-adjustable insulators.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Elimination Of Static Electricity (AREA)
- Installation Of Indoor Wiring (AREA)
- Details Of Indoor Wiring (AREA)
Description
Die Neuerung betrifft einen Isolationsträger.The innovation concerns an insulation support.
Aus der DE-U 71 43 970 ist eine Abdeckung für Stromleitungen bekannt, die über Distanzhalter auf den Stromleitungen festgelegt ist. Diese Distanzhalter sind im Spritzguß- und Blasverfahren hergestellte Formteile, die in ihrem Haltesitz auf der Stromleitung mit Vorspannung ausgerüstet sind, so daß sie auf der Stromleitung klemmend festgelegt werden können. Die bekannten Distanzhalter besitzen Verrasterungsnasen bzw. Abstützfüße, die sich bei der Herstellung der Verbindung zwischen dem Distanzhalter und der Abdeckung an zugeordneten Wandbereichen der Abdeckung entweder abstützen oder von diesen tastend hintergriffen werden. Die bekannten Distanzhalter sind mit ihrer flächig ausgedehnten Querschnittsform und ihren tolerierten Abmessungen in erster Linie im Spritzgußverfahren herstellbar, da grundsätzlich nur bei diesen Verfahren die erforderliche Maßgenauigkeit erzielt werden kann. In begrenztem Maße ist hier allerdings auch die Herstellung im Blasverfahren anwendbar. Aus dem Prospektprogramm der REHAU AG + Co ,,Stromschienen-Abdecksysteme", Lieferprogramm E 55.100 KEH 1.90 ist eine Stromschienenabdeckung bekannt, die beispielsweise beim Bau von U-Bahnen eingesetzt werden kann. Diese Stromschienenabdeckung besteht aus einem Stromschienenschutzkasten und einem Distanzhalter. Der in dieser Veröffentlichung gezeigte Distanzhalter ist ein hohles Blasteil, welches an einem gestreckten Mittelbereich zwei voneinander abgewandt abgekröpfte Endbereiche aufweist.From DE-U 71 43 970 a cover for power lines is known, which is fixed on the power lines via spacers. These spacers are injection molded and blow molded parts that are pre-tensioned in their seat on the power line so that they can be clamped on the power line. The known spacers have latching lugs or support feet, which are either supported on the associated wall areas of the cover during the establishment of the connection between the spacer and the cover or are groped behind them. The known spacers with their extensive cross-sectional shape and their tolerated dimensions can be produced primarily by injection molding, since the required dimensional accuracy can only be achieved with these methods. To a limited extent, however, the blowing process can also be used here. From the brochure program of REHAU AG + Co "Busbar Cover Systems", delivery program E 55.100 KEH 1.90, a busbar cover is known that can be used, for example, in the construction of subways. This busbar cover consists of a busbar protection box and a spacer. The one in this The spacer shown in the publication is a hollow blow-molded part which has two end regions which are bent away from one another at an elongated central region.
Diese abgekröpften Endbereiche werden beim Einsatz auf dem Stromschienenkopfbereich hinter diesem Kopfbereich eingerastet oder eingeknöpft, so daß der Distanzhalter fest auf dem Stromschienenkopfbereich aufgerastet werden kann.These cranked end areas are snapped or buttoned behind this head area when used on the busbar head area, so that the spacer can be snapped firmly onto the busbar head area.
Die bekannten Distanzhalter werden in einem Abstand von ca. 0,4 bis 1 m auf die Stromschienenkopfbereiche aufgesetzt. Sie liegen mit ihren Außenwänden an den Innenwänden des Stromschienenschutzkastens an und bilden nach dessen Aufsetzen kammerartige Unterteilungen von Distanzhalter zu Distanzhalter. Dadurch entstehen in Längsrichtung der Stromschiene voneinander abgeschottet Luftpolster um die Stromschiene herum, wodurch ein Luftaustausch in Längsrichtung verhindert bzw. sehr stark eingeschränkt wird. Es kommt bei der Erwärmung der Stromschiene im Betrieb zu Wärmestauerscheinungen, da die überschüssige Wärme durch die stehenden Luftpolster nicht abgeführt werden kann. Hierdurch bedingt, kann es zu örtlich stark unterschiedlichen Längenausdehnungen der Stromschienenschutzkästen kommen, was insbesondere bei dem Übergang von Schatten- und Sonnenbereichen zu negativen Einflüssen auf das Abdeckungssystem insgesamt führen kann. Durch solche unterschiedlichen Längenausdehnungen der Stromschienenschutzkästen kann es zum Verklemmen bzw. zu einem Verschieben auf den Distanzhaltem kommen, wodurch die Distanzhalter aus ihrem Klemmsitz auf dem Stromschienenkopfbereich sogar gelöst werden können.The known spacers are placed on the conductor rail head areas at a distance of approximately 0.4 to 1 m. They rest with their outer walls on the inner walls of the busbar protection box and form chamber-like subdivisions from spacer to spacer after it has been put on. This results in air cushions separated from one another in the longitudinal direction of the busbar, which prevents or very severely restricts air exchange in the longitudinal direction. When the busbar heats up during operation, heat build-up occurs because the excess heat cannot be dissipated by the standing air cushions. As a result of this, there may be locally very different linear expansions of the busbar protection boxes, which can lead to negative influences on the covering system as a whole, in particular in the transition from shady and sunny areas. Such different lengths of the busbar protection boxes can result in jamming or displacement on the spacers, as a result of which the spacers can even be released from their press fit on the busbar head area.
Um diesen Nachteil zu vermeiden ist es auf der DE-U 92 05 979 bekannt, Distanzhalter mit kontrollierten, ringförmig geschlossenen oder einseitig offenen Profilabschnitten zu verwenden. Diese Distanzhalter bilden mit ihren die Stromschienen übergreifenden inneren Wandbereichen und ihren dem Stromschienenschutzkasten zugewandten äußeren Wandbereich wenigstens eine Durchgangsöffnung für den ungehinderten Luftdurchtritt zwischen dem Stromschienenschutzkasten und den die Stromschiene abdeckenden Wandbereichen. Dadurch wird zwar die Möglichkeit eines Luftaustausches geschaffen, eine unkontrollierte Längenausdehnung der Stromoschienenschutzkästen in beiden Richtungen wird dadurch jedoch nicht verhindert.In order to avoid this disadvantage, it is known from DE-U 92 05 979 to use spacers with controlled, annularly closed or open-sided profile sections. With their inner wall areas spanning the busbars and their outer wall area facing the busbar protection box, these spacers form at least one through opening for the unimpeded air passage between the busbar protection box and the wall areas covering the busbar. This creates the possibility of air exchange, but it does not prevent an uncontrolled linear expansion of the busbar protection boxes in both directions.
Aus der am 15.02.95 veröffentlichten EP-A 0 638 973 ist ein Distanzhalter für Stromschienenschutzkästen bekannt geworden, welcher in definierten Bereichen mit einer Anschlagbegrenzung für die Stimflächen der Stromschienenschutzkästen ausgestattet ist. Diese Anschlagbegrenzungen ragen in den Spaltabstand zwischen den freien Enden axial benachbarter Stromschienenschutzkästen von dem zugeordneten Distanzhalter auf und bilden auf diese Weise die Anschlagbegrenzung. Der Anschlag des freien Endes eines zugeordneten Stromschienenschutzkastens an der Anschlagbegrenzung des Distanzhalters bewirkt, daß ab diesem Zeitpunkt die weitergehende Längenänderung des Stromschienenschutzkastens in die entgegengesetzte Richtung vonstatten geht, so daß diese Längenänderung durch das übergreifende, muffenartige Deckelement des nächstfolgenden Stromschienenschutzkastens aufgenommen wird. damit sind die Stromschienenschutzkästen einseitig festgelegt, während auf der anderen Seite eine Längenänderung durch Ausdehnung möglich ist.From EP-A 0 638 973, published on February 15, 1995, a spacer for busbar protection boxes has become known, which in defined areas is equipped with a limit stop for the end faces of the busbar protection boxes. These limit stops protrude from the associated spacer in the gap between the free ends of axially adjacent busbar protection boxes and in this way form the limit stop. The stop of the free end of an assigned busbar protection box at the stop limit of the spacer means that from this point in time the further change in length of the busbar protection box takes place in the opposite direction, so that this change in length is absorbed by the overlapping, sleeve-like cover element of the next busbar protection box. thus the busbar protection boxes are fixed on one side, while on the other side a length change is possible due to expansion.
Obwohl diese Anordnung von Anschlagbegrenzungen auf den Distanzhalter zwischen den freien Enden axial benachbarter Stromschienenschutzkästen die gewünschte Wirkung erbringt, wird hier als Nachteil angesehen, daß jeweils zwei verschiedene Arten von Distanzhaltern verwendet werden müssen. So werden die mit den Anschlagbegrenzungen versehenen Distanzhalter nur an den freien Enden axial benachbarter Stromschienenschutzkästen eingesetzt, während über die gestreckte Länge der Stromschienenschutzkästen Distanzhalter ohne Anschlagbegrenzung eingesetzt werden.Although this arrangement of limit stops on the spacer between the free ends of axially adjacent busbar protection boxes produces the desired effect, it is considered a disadvantage here that two different types of spacers must be used in each case. The spacers provided with the limit stops are only used at the free ends of axially adjacent busbar protection boxes, while spacers without limit stops are used over the extended length of the busbar protection boxes.
Hier setzt die Neuerung ein, die es sich zu Aufgabe gestellt hat, diesen Nachteil zu vermeiden bei gleicher Wirkungsweise der Anschlagbegrenzungen. Neuerungsgemäß wird dazu ein Isolationsträger mit den Merkmalen des Anspruchs vorgeschlagen.This is where the innovation comes in, which has set itself the task of avoiding this disadvantage with the same effect of the stop limits. According to the invention, an insulation support with the features of the claim is proposed.
Mit dieser Anordnung der Anschlagbegrenzungen an die Außenseiten des Tragarms eines lsolationsträgers ist das Problem der unterschiedlichen Lagerhaltung der Distanzhalter aus dem Stand der Technik gelöst.With this arrangement of the stop limits on the outer sides of the support arm of an insulation support, the problem of different storage of the spacers from the prior art is solved.
Die neuerungsgemäße Anschlagbegrenzung kann auf einer oder mehreren der zu den freien Enden der benachbarten Stromschienenschutzkästen gerichteten Außenseiten des Tragarms angeordnet sein. Es kann sich dabei um einen aus der zugeordneten Oberfläche des Tragarms oder einem an diese aus- bzw. angeformten Anschlagnocken oder eine Anschlagwulst handeln. Wesentlich hierbei ist, daß bei einer wärmebedingten Ausdehnung des Stromschienenschutzkastens nach dem Anschlag einer Stirnfläche des Stromschienenschutzkastens an der zugeordneten Anschlagbegrenzung die Richtung der weiteren Ausdehnung des Stromschienenschutzkastens umgekehrt wird, und zwar hin zu der Anschlagbegrenzung am gegenüberliegenden freien Ende des Stromschienenschutzkastens. Dabei sind die vorgegebenen Distanzen zwischen den freien Enden eines Stromschienenschutzkastens und an den beiden zugeordneten Anschlagbegrenzungen so gewählt, daß in allen Lagen das muffenartige Deckelement die Bereiche zwischen den freien Enden benachbarter Stromschienenschutzkästen und der zugeordneten Anschlagbegrenzung überdeckt.The stop limitation according to the invention can be arranged on one or more of the outer sides of the support arm directed towards the free ends of the adjacent busbar protection boxes. It can be a stop cam or a stop bead formed from the assigned surface of the support arm or a stop cam molded or molded onto it. It is essential here that in the case of a heat-related expansion of the busbar protection box after the abutment of an end face of the busbar protection box at the associated stop limitation, the direction of the further expansion of the busbar protection box is reversed, namely towards the stop limitation at the opposite free end of the busbar protection box. The predetermined distances between the free ends of a busbar protection box and at the two associated limit stops are selected so that the sleeve-like cover element covers the areas between the free ends of adjacent busbar protection boxes and the associated limit stop in all positions.
In der Zeichnung sind zwei Isolationsträger 1, 2 mit an der Außenseite 11, 21 angeordneten Anschlagbegrenzungen 12, 22 schematisch dargestellt. Die Distanz zwischen den beiden Isolationsträgern 1, 2 wird durch den Stromschienenschutzkasten 3 derart überbrückt, daß dessen freie Enden 31, 32 die Kanten 13, 23 noch überdecken. Zwischen den freien Enden 31, 32 des Stromschienenschutzkastens 3 und den jeweils zugeordneten Anschlagbegrenzungen 12, 22 der Isolationsträger 1, 2 ist ein systembedingter Verschiebeabstand A freigehalten.In the drawing, two insulation supports 1, 2 with
In der Zeichnung sind ferner in axialer Richtung verlaufend die auf den Stromschienenschutzkasten 3 folgenden Stromschienenschutzkästen 4, 5 andeutet. Derselbe Verschiebeabstand A ist auch bei den folgenden Stromschienenschutzkästen 4, 5 gegeben, so daß jeder einzelne Stromschienenschutzkasten 3, 4, 5 die doppelte Distanz A für temperaturbedingte Längenänderungen zur Verfügung hat.In the drawing, the
Der Bereich der Isolationsträger 1,2 mit den Anschlagbegrenzungen 12, 22 und den freien Verschiebeabständen A ist jeweils durch das muffenartige Deckelement 6, 7 abgedeckt. Dieses muffenartige Deckelement 6, 7 kann beispielsweise an einem freien Ende des zugeordneten Stromschienenschutzkastens 3 einstückig angeformt sein. Das muffenartige Deckelement 6, 7 kann aber auch durch Kleben oder durch mechanische Verbindung an dem freien Ende des Stromschienenschutzkastens 3, 4, 5 festgelegt sein.The area of the insulation supports 1, 2 with the
Die Längenabmessungen der einzelnen Stromschienenschutzkästen 3, 4, 5 wird nach der Neuerung so eingestellt, daß keine Längenänderung mehr möglich ist, wenn die freien Enden benachbarter Stromschienenschutzkästen an den jeweiligen Anschlagbegrenzungen anliegen. Der Verschiebeabstand A muß demnach eine Größenordnung aufweisen, bei der die größtmögliche Ausdehnung entsprechend berücksichtigt ist, um Verwerfungen der axial benachbarten Stromschienenschutzkästen 3, 4 und 3, 5 untereinander zu vermeiden.The length dimensions of the individual
Die Isolationsträger 1, 2, bei denen das neuerungsgemäße Abstandhalteprinzip eingesetzt werden kann, können sowohl einteilig als auch mehrteilig ausgeführt sein. Der Einsatz ist sowohl bei Festisolatoren als auch bei höhenverstellbaren Isolatoren möglich.The insulation supports 1, 2, in which the spacing principle according to the innovation can be used, can be designed in one piece or in multiple pieces. It can be used with both fixed insulators and height-adjustable insulators.
Claims (1)
- Insulation support for live rails with one base plate and one bracket for the live rail, whereby the base plate with the bracket constitutes a retaining assembly for the retention area of the live rails, whereby the live rail is covered by live-rail protective casings (3,4,5) which are a defined distance from one another, which are fixed over the live rail which they are covering by the distance spacers which are arranged over the live rail, whereby the defined distance between the two neighbouring live-rail protective casings (3,4,5) is covered by a coupling type cover element (6,7) whereby on at least one of the external faces (11,21) of the insulation support (1,2) directed to the free ends (31,32) of the live-rail protective casings (3) a stop limiter (12,22) is formed, which rises into the gap covered by the coupling type cover element (6 and 7) between the two neighbouring live-rail protective casings (3,4) and (3,5), whereby the given distances between the free ends (31,32) of one of the live-rail protective casings (3) and the two assigned stop limiters (12,22) are chosen in such a way that the coupling type cover element (6,7) covers all axial covering areas of the live-rail protective casings (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9313600U | 1993-09-09 | ||
| DE9313600U DE9313600U1 (en) | 1993-09-09 | 1993-09-09 | Insulation carrier for busbars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0643463A1 EP0643463A1 (en) | 1995-03-15 |
| EP0643463B1 true EP0643463B1 (en) | 1997-09-03 |
Family
ID=6897878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94111482A Expired - Lifetime EP0643463B1 (en) | 1993-09-09 | 1994-07-22 | Insulator support for conductor rails |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0643463B1 (en) |
| DE (2) | DE9313600U1 (en) |
| ES (1) | ES2108912T3 (en) |
| GR (1) | GR3025212T3 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6607093U (en) * | 1971-01-07 | Kloeckner Gmbh | Electrical busbar trunking system with changeable cable outlets | |
| US2732420A (en) * | 1956-01-24 | sillman | ||
| CH543825A (en) * | 1971-08-04 | 1973-10-31 | Bbc Brown Boveri & Cie | Insulating gas-filled encapsulated electrical high-voltage line |
| DE7143970U (en) * | 1971-11-23 | 1972-03-23 | Rehau Plastiks Gmbh | Cover for power lines |
| DE2739482C2 (en) * | 1977-09-01 | 1985-01-17 | Wampfler Gmbh, 7858 Weil | Busbar arrangement |
| DE9205979U1 (en) * | 1992-05-02 | 1992-07-02 | Rehau Ag + Co, 8673 Rehau, De | |
| DE9309171U1 (en) * | 1993-06-19 | 1993-08-19 | Rehau Ag & Co | Spacers for busbar protection boxes |
-
1993
- 1993-09-09 DE DE9313600U patent/DE9313600U1/en not_active Expired - Lifetime
-
1994
- 1994-07-22 ES ES94111482T patent/ES2108912T3/en not_active Expired - Lifetime
- 1994-07-22 EP EP94111482A patent/EP0643463B1/en not_active Expired - Lifetime
- 1994-07-22 DE DE59403948T patent/DE59403948D1/en not_active Expired - Fee Related
-
1997
- 1997-10-29 GR GR970402849T patent/GR3025212T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE9313600U1 (en) | 1993-11-18 |
| GR3025212T3 (en) | 1998-02-27 |
| DE59403948D1 (en) | 1997-10-09 |
| EP0643463A1 (en) | 1995-03-15 |
| ES2108912T3 (en) | 1998-01-01 |
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